257152359 has 4 divisors (see below), whose sum is σ = 342869816. Its totient is φ = 171434904.

The previous prime is 257152339. The next prime is 257152391. The reversal of 257152359 is 953251752.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-257152359 is a prime.

It is a super-2 number, since 2×257152359² = 132254671478529762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257152339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42858724 + ... + 42858729.

It is an arithmetic number, because the mean of its divisors is an integer number (85717454).

Almost surely, 2^257152359 is an apocalyptic number.

257152359 is a deficient number, since it is larger than the sum of its proper divisors (85717457).

257152359 is an equidigital number, since it uses as much as digits as its factorization.

257152359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85717456.

The product of its digits is 94500, while the sum is 39.

The square root of 257152359 is about 16035.9707844583. The cubic root of 257152359 is about 635.9117322422.

The spelling of 257152359 in words is "two hundred fifty-seven million, one hundred fifty-two thousand, three hundred fifty-nine".